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学者姓名：张杰
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摘要 ：
In an anammox biofilm reactor, long-term operation inevitably leads to the repeated formation of localized dead zones. Once these dead zones (DZs) occur, the anammox reactor's nitrogen removal efficiency is severely reduced. However, the mechanisms and intrinsic reasons for the transformation of DZs remain unexplored. In this study, the pilot-scale biofilters were classified into biologically active zones (BZs), transition zones (TZs), and DZs. The results indicated that microbial communities undergo accelerated succession from the TZ. Biofilms respond to environmental stress from the DZs by altering the levels of signaling molecules, triggering a series of cascading reactions. These reactions alter the abundance of genes involved in nitrogen removal, promote substance transformation, and speed up the succession of microbial communities. This study demonstrates the objectives and self-healing mechanisms of the anammox biofilm process in the presence of dead zones, which could support the long-term application of anammox technology.
关键词 ：
Biofilm Biofilm Biofiltration reactor Biofiltration reactor AHLs AHLs Quorum sensing Quorum sensing Anammox Anammox Dead zone Dead zone
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| GB/T 7714 | Zhu, Yanjun , Li, Dong , Zhang, Jie . Deciphering the dead zone on anammox system in biofilters [J]. | BIORESOURCE TECHNOLOGY , 2025 , 416 . |
| MLA | Zhu, Yanjun 等. "Deciphering the dead zone on anammox system in biofilters" . | BIORESOURCE TECHNOLOGY 416 (2025) . |
| APA | Zhu, Yanjun , Li, Dong , Zhang, Jie . Deciphering the dead zone on anammox system in biofilters . | BIORESOURCE TECHNOLOGY , 2025 , 416 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Effects of short hydraulic retention time (HRT) in wet weather and long HRT in dry weather on sludge properties, microbial community, and metabolomic of anammox granular system were studied. Results showed under equal nitrogen loading rate (0.4 kg N/(m3 & sdot; d)) conditions, an HRT of 4.41 h was beneficial for total nitrogen removal efficiency (78.9 %). The shorter the HRT, the lower the particle density (1.01 +/- 0.34 g/cm3), the lower the settling performance (1.18 +/- 0.28 cm/s), and the worse the biomass retention (1.04 +/- 0.18 g/L), but the higher the mechanical strength (85.22 Pa). Properly decreasing HRT could increase the permeability of anammox granules, ensuring their activity. Metabolomics analysis indicated that the activity of anaerobic ammonium oxidizing bacteria was promoted by stimulating the metabolic pathways of amino acids and glycerophospholipids. In summary, this research clarified the effect of wet/dry weather on anammox granular system and provided theoretical guidance for the application in engineering.
关键词 ：
Hydraulic retention time Hydraulic retention time Nitrogen removal Nitrogen removal Microbial community Microbial community Metabolomics Metabolomics Mechanical strength Mechanical strength
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| GB/T 7714 | Wang, Wenqiang , Wang, Wenjuan , Li, Zhu et al. Insight into anammox granular system operation in wet/dry weather [J]. | BIORESOURCE TECHNOLOGY , 2024 , 396 . |
| MLA | Wang, Wenqiang et al. "Insight into anammox granular system operation in wet/dry weather" . | BIORESOURCE TECHNOLOGY 396 (2024) . |
| APA | Wang, Wenqiang , Wang, Wenjuan , Li, Zhu , Deng, Jiguang , Li, Dong , Zhang, Jie . Insight into anammox granular system operation in wet/dry weather . | BIORESOURCE TECHNOLOGY , 2024 , 396 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The stability of anaerobic ammonium oxidation (anammox) performance is inseparably linked to the dynamic equilibrium of microbial interactions. However, understanding of the key microbes within anammox systems remains limited. Through the analysis of 186 16S rRNA datasets combined with various ecological analysis methods, this study identified key microbes in the anammox process. Interactions between Candidatus_Kuenenia and other key microbes are the most significant with greater tolerance to differing water quality, while Candidatus_Jettenia have higher habitat specificity. Under adverse conditions, anammox bacteria can reduce the impact of unfavorable environments by enhancing interactions with certain microbes. This study comprehensively reviews the main functions of key microbes in the anammox system and their interactions, and summarizes several common interaction mechanisms, providing new insights for understanding the startup and stable operation of the anammox process.
关键词 ：
Ecological analysis Ecological analysis Function Function Anammox Anammox Interaction mechanisms Interaction mechanisms Microbial community Microbial community
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| GB/T 7714 | Zhu, Yuliang , Li, Dong , Ma, Ben et al. Deciphering key microbes and their interactions within anaerobic ammonia oxidation systems [J]. | BIORESOURCE TECHNOLOGY , 2024 , 416 . |
| MLA | Zhu, Yuliang et al. "Deciphering key microbes and their interactions within anaerobic ammonia oxidation systems" . | BIORESOURCE TECHNOLOGY 416 (2024) . |
| APA | Zhu, Yuliang , Li, Dong , Ma, Ben , Zeng, Huiping , Zhang, Jie . Deciphering key microbes and their interactions within anaerobic ammonia oxidation systems . | BIORESOURCE TECHNOLOGY , 2024 , 416 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The endogenous partial denitrification process (EPD) led by glycogen-accumulating organisms (GAOs) has become an alternative to NO2- supply in mainstream anaerobic-ammonia oxidation (anammox). However, low autotrophic nitrogen removal contribution is an urgent problem that needs to be solved in simultaneous endogenous partial denitrification/anammox (EPDA) system. This study used anaerobic duration optimization to enhance the autotrophic nitrogen removal capacity of EPDA system. The results showed that the EPDA activity increased from 0.67 to 1.09 mg N/g VSS center dot h after anaerobic time was extended to 120 min. This significantly improved the contribution of anammox to TIN removal, increasing from 23.5 % to 61.6 %. During the phase III, Eff.TIN of 4.5+1.8 mg/L and NRE of 92.2 %+3.0 %. The enrichment of AnAOB (Candidatus Brocadia) and GAOs (Defluviicoccus) was responsible for maintaining the stability of the EPDA process. This study provides a feasible optimization strategy for improving the contribution of autotrophic nitrogen removal in the EPDA system.
关键词 ：
Endogenous partial denitrification Endogenous partial denitrification Anaerobic optimization Anaerobic optimization Granular sludge system Granular sludge system Intracellular carbon Intracellular carbon Autotrophic nitrogen removal Autotrophic nitrogen removal
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| GB/T 7714 | Li, Dong , Zeng, Fanxu , Yang, Songwei et al. Simultaneous endogenous partial denitrification/anammox process for low-strength wastewater treatment: Process optimization, nitrogen removal and microbial dynamics [J]. | BIOCHEMICAL ENGINEERING JOURNAL , 2024 , 213 . |
| MLA | Li, Dong et al. "Simultaneous endogenous partial denitrification/anammox process for low-strength wastewater treatment: Process optimization, nitrogen removal and microbial dynamics" . | BIOCHEMICAL ENGINEERING JOURNAL 213 (2024) . |
| APA | Li, Dong , Zeng, Fanxu , Yang, Songwei , Zhu, Yuliang , Li, Zhu , Zeng, Huiping et al. Simultaneous endogenous partial denitrification/anammox process for low-strength wastewater treatment: Process optimization, nitrogen removal and microbial dynamics . | BIOCHEMICAL ENGINEERING JOURNAL , 2024 , 213 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In this study, the filamentous bulking (FB) with moderate and excessive levels were demonstrated to induce anammox failure by inhibiting nitrogen (N) removal and biomass retention. The low external mass transfer resulted from high liquid-surface friction and low turbulence of filamentous surface was considered the "trigger" of anammox failure, which decreased flux of nitrogen flow toward granular surface and directly limited Nremoval loading, which meanwhile exposed granules with N-scarcity environment and indirectly inhibited Nremoval bio-activity. Low bio-activity performed poor extracellular polymeric substances secretion further destroyed bio-aggregation with low suface hydrophobicity, which acted as "accelerator" for granule disintegration and biomass washout, ultimatly leading to anammox failure. Fortunately, incresing hydraulic shear stress could eradicate FB's negative effects without inhibiting FB itself, which promoted re-granulation and N-remval restore by enhancing external mass transfer more than hydraulic detachment. Enhancing mechanical stirring with FB level was necessary to maintain stable operation of granular anammox system.
关键词 ：
Rheological properties Rheological properties Surface thermodynamics Surface thermodynamics Mass transfer Mass transfer Boundary layer thickness Boundary layer thickness Hydraulic shear stress Hydraulic shear stress
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| GB/T 7714 | Wei, Ziqing , Li, Dong , Li, Shuai et al. Negative role of filamentous bulking and its elimination in anammox process [J]. | BIORESOURCE TECHNOLOGY , 2024 , 395 . |
| MLA | Wei, Ziqing et al. "Negative role of filamentous bulking and its elimination in anammox process" . | BIORESOURCE TECHNOLOGY 395 (2024) . |
| APA | Wei, Ziqing , Li, Dong , Li, Shuai , Zeng, Huiping , Zhang, Jie . Negative role of filamentous bulking and its elimination in anammox process . | BIORESOURCE TECHNOLOGY , 2024 , 395 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Effective retention of anammox bacteria (AnAOB) is the prerequisite for the application of anammox process, especially in treating low-strength wastewater. The employment of anammox granules coupled with phosphorus minerals has gained extensive attention as retaining biomass. To achieve the stability of mineralized anammox system for low-strength wastewater treatment, two switching strategies (cascade strategy and plunging strategy) were compared in terms of nitrogen removal performance, physicochemical properties and microbial community. Results showed cascade strategy significantly implemented the nitrogen removal rate of 0.86 +/- 0.05 kg N/ m3/d at hydraulic retention time of 1.6 h, with higher phosphorus removal via the hydroxyapatite formation. The cross-section observation indicated mineralized anammox granules exhibited a unique spatially heterogeneous structure with distinct zoning. Moreover, the granules displayed dense structure, excellent settleability, superior mechanical strength and outstanding biomass retention based on cascade strategy. Microbial analysis revealed the dominant populations were shifted from Ca. Kuenenia to Ca. Brocadia after switching to low-strength conditions. Further investigation is warranted to explore effective methods for phosphorus recovery from hydroxyapatite. Overall, the study provided a reference for promoting and understanding the synergistic nitrogen removal and phosphorus recovery in actual applications.
关键词 ：
Low-strength wastewater Low-strength wastewater Mineralized anammox granule Mineralized anammox granule Cascade strategy Cascade strategy Microbial succession Microbial succession Spatial distribution Spatial distribution
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| GB/T 7714 | Li, Zhu , Li, Dong , Zhang, Jingzhao et al. Unravelling the optimal strategy on the stable mineralized anammox granular systems in treating low-strength wastewater [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 59 . |
| MLA | Li, Zhu et al. "Unravelling the optimal strategy on the stable mineralized anammox granular systems in treating low-strength wastewater" . | JOURNAL OF WATER PROCESS ENGINEERING 59 (2024) . |
| APA | Li, Zhu , Li, Dong , Zhang, Jingzhao , Wang, Wenqiang , Li, Mingrun , Wang, Shaopo et al. Unravelling the optimal strategy on the stable mineralized anammox granular systems in treating low-strength wastewater . | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 59 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The application of ammonia -oxidizing archaea (AOA)-based partial nitrification-anammox (PN-A) for mainstream wastewater treatment has attracted research interest because AOA can maintain higher activity in lowtemperature environments and they have higher affinity for oxygen and ammonia - nitrogen compared with ammonia -oxidizing bacteria (AOB), thus facilitating stabilized nitrite production, deep removal of low -ammonia, and nitrite -oxidizing bacteria suppression. Moreover, the low affinity of AOA for ammonia makes them more tolerant to N -shock loading and more efficiently integrated with anaerobic ammonium oxidation (anammox). Based on the limitations of the AOB-based PN-A process, this review comprehensively summarizes the potential and significance of AOA for nitrite supply, then gives strategies and influencing factors for replacing AOB with AOA. Additionally, the methods and key influences on the coupling of AOA and anammox are explored. Finally, this review proposes four AOA-based oxygen- or ammonia -limited autotrophic nitritation/denitrification processes to address the low effluent quality and instability of mainstream PN-A processes.
关键词 ：
Coupling of ammonia-oxidizing archaea and Coupling of ammonia-oxidizing archaea and Mainstream wastewater treatment Mainstream wastewater treatment anammox bacteria anammox bacteria Novel autotrophic nitrogen removal processes Novel autotrophic nitrogen removal processes Ammonia-oxidizing microorganisms Ammonia-oxidizing microorganisms Substrate affinity Substrate affinity
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| GB/T 7714 | Guo, Kehuan , Li, Dong , Hao, Tongyao et al. Potential directions for future development of mainstream partial nitrification-anammox processes: Ammonia-oxidizing archaea as novel functional microorganisms providing nitrite [J]. | BIORESOURCE TECHNOLOGY , 2024 , 399 . |
| MLA | Guo, Kehuan et al. "Potential directions for future development of mainstream partial nitrification-anammox processes: Ammonia-oxidizing archaea as novel functional microorganisms providing nitrite" . | BIORESOURCE TECHNOLOGY 399 (2024) . |
| APA | Guo, Kehuan , Li, Dong , Hao, Tongyao , Teng, Luyao , Li, Shuai , Zeng, Huiping et al. Potential directions for future development of mainstream partial nitrification-anammox processes: Ammonia-oxidizing archaea as novel functional microorganisms providing nitrite . | BIORESOURCE TECHNOLOGY , 2024 , 399 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本发明公开了一种基于微通道凹槽内涡胞流动的流量测量装置及方法，属于流量测量装置领域，测量装置中，流体主通道为矩形结构，圆形微凹槽为圆形与流体主通道部分相交形成的弧形结构，圆形微凹槽与流体主通道在相交部位相连通，且设置粒子和第二相不相溶液体补充通道向圆形微凹槽中输入第二相不相溶液体和单个示踪粒子；流体主通道中通入待测流体，待测流体带动示踪粒子形成二次流动，微型光感传感器检测示踪粒子的运动频率，以计算得到待测流体的流量。通过本发明的技术方案，实现了流体不同流量的检测，具有相当的分辨率，适用针对不适合示踪粒子的待测样本实现无污染的粒子跟踪测速，装置结构简单、易于制造、紧凑便携，适用大规模生产。
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| GB/T 7714 | 申峰 , 张杰 , 高杰 et al. 一种基于微通道凹槽内涡胞流动的流量测量装置及方法 : CN202310827136.9[P]. | 2023-07-06 . |
| MLA | 申峰 et al. "一种基于微通道凹槽内涡胞流动的流量测量装置及方法" : CN202310827136.9. | 2023-07-06 . |
| APA | 申峰 , 张杰 , 高杰 , 刘赵淼 . 一种基于微通道凹槽内涡胞流动的流量测量装置及方法 : CN202310827136.9. | 2023-07-06 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In this study, different concentrations of Fe(II) (0, 1.00, 7.00 mg/L) were introduced to investigate the effect on the removal of Mn(II) in the biofilter. Fe(II) significantly inhibited the removal of Mn and prolonged the start-up of biofilters, the start-up periods for the biofilters with different Fe(II) concentrations (0, 1.00 and 7.00 mg/L) were 24, 30 and 46 days, respectively. The study showed that Fe(II) and the Fe(III) oxyhydroxides generated from Fe(II) oxidation inhibited the removal of Mn(II) by affecting the proliferation of manganese-oxidizing bacteria (MnOB) and the activity of manganese oxides (MnOx) in the biofilter. On day 20, the total MnOB genera proportions were 13.44 %, 13.35 % and 20.09 % with different Fe(II) concentrations (0, 1.00, 7.00 mg/L), respectively. The addition of Fe(II) significantly impeded the proliferation of Pseudomonas, Acinetobacter and Arthrobacter, but enhanced the proliferation of Hyphomicrobium and Sphingopyxis. On day 60, the abundance of total MnOB was reduced obviously in three biofilters (6.95 %, 6.44 % and 9.76 %). This indicated that the biological oxidation of Mn dominates during the initial operation stage of the filter layer, while the chemical auto-catalytic oxidation of active MnOx dominates in the later stages. The contribution of Mn removal by bio-logical oxidation was positively correlated with the abundance of MnOB, and batch experiments confirmed this conclusion. Moreover, the addition of Fe(II) reduced MnOx activity by suppressing the production of high-reactivity intermediate-Mn(III), and Fe(III) oxyhydroxides hindered the formation of mature MnOx films on the surface of the filter media.
关键词 ：
Manganese removal Manganese removal Manganese-oxidizing bacteria Manganese-oxidizing bacteria Active manganese oxides Active manganese oxides Fe(II) Fe(II)
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| GB/T 7714 | Zheng, Jifang , Li, Dong , Zeng, Huiping et al. Effect of Fe(II) on manganese removal in biofilters: Microbial community, formation of manganese oxide and related mechanisms [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 56 . |
| MLA | Zheng, Jifang et al. "Effect of Fe(II) on manganese removal in biofilters: Microbial community, formation of manganese oxide and related mechanisms" . | JOURNAL OF WATER PROCESS ENGINEERING 56 (2023) . |
| APA | Zheng, Jifang , Li, Dong , Zeng, Huiping , Yang, Sen , Zhang, Zhaoxiang , Zhang, Jie . Effect of Fe(II) on manganese removal in biofilters: Microbial community, formation of manganese oxide and related mechanisms . | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 56 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Anammox is a highly efficient, environmentally friendly, and promising form of biological denitrification. Since nitrite is not present in the majority of wastewater, the lack of electron acceptors (nitrite) greatly limits the practical application of Anammox. However, many researchers have overlooked the option of employing other electron acceptors. Much evidence suggests that Anammox is an electroactive microorganism that can deliver electrons to various extracellular electron acceptors. This information informs researchers that Anammox cells are not limited to accepting electrons only from electron acceptors within their interior. It also provides the possibility that Anammox bacteria can utilize other electron acceptors. Many studies have shown the possibility that Anammox bacteria can use other electron acceptors. However, the implementation of the Anammox process for various electron acceptors faces some challenges in actual applications. We review several electron acceptors (nitrite, nitric oxide, ferric iron, sulfate, and electrode) that have been shown to be utilized by Anammox as electron acceptors. This paper provides a comprehensive review of the physicochemical properties of these electron acceptors, elucidates the intricate transformation pathways of ammonia nitrogen catalyzed by distinct electron acceptors, and highlights the pivotal role of Anammox bacteria in the nitrogen cycle. The electron transfer theory is used to explain the reasons for the Anammox nitrogen removal efficiency differences under different electron acceptors. It also discusses Anammox's extracellular and intracellular electron transfer mechanisms in the presence of several electron acceptor types. The aim is to enhance researchers' understanding of the metabolic variety of Anammox bacteria and to realize a practical application. Thus, the study's infor-mation gaps, shortcomings of different electron acceptors Anammox process, and the required further im-provements are all identified and discussed.
关键词 ：
Specific Anammox activity Specific Anammox activity Electron transfer Electron transfer Nitrogen removal Nitrogen removal Electron acceptors Electron acceptors Anammox Anammox Electron shuttle Electron shuttle
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| GB/T 7714 | Zhu, Yanjun , Li, Dong , Qi, Saiyue et al. Anticipating on potential electron acceptors for Anammox [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 467 . |
| MLA | Zhu, Yanjun et al. "Anticipating on potential electron acceptors for Anammox" . | CHEMICAL ENGINEERING JOURNAL 467 (2023) . |
| APA | Zhu, Yanjun , Li, Dong , Qi, Saiyue , Yang, Sen , Zhang, Jie , Wang, Wenqiang et al. Anticipating on potential electron acceptors for Anammox . | CHEMICAL ENGINEERING JOURNAL , 2023 , 467 . |
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